Welcome to Tonin & Co. LLP

Founded in 2006, Tonin & Co. LLP is based out of Guelph, Ontario and primarily services clients across southwestern Ontario, with a growing client base across Canada and internationally.


Working with local business owners and not-for-profit organizations to meet their comprehensive needs is our passion. Our team of Chartered Professional Accountants (CPAs) are committed to being available and responsive to our clients at all times. Simply put, our clients’ best interests are our number one priority as we strive to exceed expectations while ensuring our level of service is appropriate for each individual client’s needs.


Our expertise in long-term business management, including maximizing business value, business growth, and succession planning has been invaluable to our diverse client base. The trusted relationships with our clients are a collaborative partnership. We want to see businesses and organizations grow and thrive and approach every relationship with a team-based mentality.


We enjoy what we do, because we are more than just auditors or accountants. We take pride in building long-term relationships by helping businesses and organizations reach their goals. We also take pride in recruiting and developing professional staff.


Tonin & Co, LLP is always looking for new clients. We offer complimentary initial consultations to better understand your needs and how we can be of assistance. Please do not hesitate to contact us if you are looking for a reliable, trustworthy accountant and advisor who is always looking out for your best interests.


Please call our office at 519-822-5307 and ask to speak to Peter Tonin, Pat Brooker, or Tim Lopinski.